This news article was originally written in Spanish. It has been automatically translated for your convenience. Reasonable efforts have been made to provide an accurate translation, however, no automated translation is perfect nor is it intended to replace a human translator. The original article in Spanish can be viewed at Empieza la construcción del túnel del AVE Madrid-Barcelona-Francia
Starts the construction of the tunnel of the AVE Madrid-Barcelona - France
08/09/2009
September 8, 2009
Adif has today started the construction of the screens of the well situated at the confluence of the streets Mallorca-Padilla, in Barcelona, and as part of the tunnel of connection Sants - Madrid-La Sagrera in the line of high speed Barcelona - France. The installation will be used as a point of maintenance of the TBM, and, later, will have the function of shaft ventilation and emergency of the tunnel exit.
The well has a circular structure consisting of screens with an inner diameter of 19.7 meters. A milling machine, a system that offers maximum guarantees of security and minimizes the impact on the ground will be used for their implementation. This machine will place screens, 1 meter in thickness, to its depth of 46.5 metres, so that the top will be located at an altitude of 38.8 meters on the contrabóveda (floor) of the tunnel.
